1N5251

Single Zener Diodes Overview

The Microchip Technology 1N5251 is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 22V with a power dissipation rating of 0.417W (approx. 500mW). The device is housed in a hermetically sealed glass axial-lead DO-7 (DO-204AA) package with two terminals. It operates within a temperature range of -65°C to 175°C and complies with RoHS standards.

Single Zener Diodes Feature Summary

• Hermetically sealed glass axial-lead construction for environmental protection
• Single unidirectional Zener configuration for voltage regulation
• Silicon diode element material ensuring stable performance

Single Zener Diodes Applications

• Voltage regulation circuits
• Reference voltage sources
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify the specific suffix letter on the part number, as it determines the exact voltage tolerance (e.g., standard 5% or tighter tolerances like 1% or 2%). Confirm RoHS compliance status, as non-compliant variants exist within the same base model family. Ensure the required package type matches the DO-7 form factor specified for this component.

Single Zener Diodes Selection Notes

Select this component when a 22V reference is required in an axial leaded package. Consider the 0.417W power rating for thermal management. Verify if military screening levels are needed by checking for specific prefix identifiers. Compare against other series members if different voltage values or surface mount packages are preferred.

Single Zener Diodes Part Context

This component belongs to the popular 1N5221 through 1N5281B series of 0.5 watt Zener Voltage Regulators. The series provides a wide selection of voltages from 2.4 to 200 volts. These devices are JEDEC registered and available in various tolerance grades and screening levels depending on the suffix and prefix codes applied to the part number.

Single Zener Diodes Replacement Considerations

Direct substitutes include MX1N5251DE3 and MX1N5251C. Other compatible parts in the series include 1N5251B and 1N5251A, though tolerance and package variations must be verified.